Access To My VM Apt and VM Connect

Hi. I can no longer access these two apts on my mobile phone having been able to do so easily in the past. When I try to log on now it does not recognized my usual VM log in email address which is in blueyonder, not either of the other two email addresses I have. So I go to "Forgot E mail Address" and put in the Act number,  Area code and DofB. It then gives an email address linked to this account which is not one I have ever heard of but which may exist because I have tried sending an email test message to it which is not returned as unknown. 

Grateful for any advice on how to overcome this issue.

Chloe